摘要 夹点技术在石油化工行业换热网络分析中广泛应用，依据夹点技术的基本原理与设计原则，利用Aspen Energy Analyzer软件对某大型乙烯装置中的乙烯热泵系统换热网络进行了分析。分别对增加换热器消除跨夹点传热及改变乙烯塔操作压力2种情况下的换热网络进行了分析。结果表明，工艺设计过程中不应只单纯追求无跨越夹点传热和低能耗，应综合考虑一次投资、操作费用及投资回收周期，从而经济、合理地综合评价能耗。
Abstract：
Pinch technology is widely used in analysizing heat exchanger network in petrochemical industry. Based on the basic theory and design principles of the pinch analysis, ethylene heat pump system of largescale ethylene plant was analyzed by Aspen Energy Analyzer. The research including two aspects, one is avoiding heat transfer across the pinch point by adding a heat exchanger; the other is changing operation pressure parameters of the ethylene tower. The result shows that a design process should not pursuit only the minimization of heat transfer crossing the pinch point and low energy consumption, the investment, operation cost and investment recovery period should be considered and the energy consumption could be evaluated economically and reasonably.
ZHANG Lai-Yong, GUO Xu-Qiang, JIANG Bo, YANG Qing-Lan, SUN Chang-Geng.Analysis of Heat Exchanger Network for Ethylene Heat Pump System[J]. Chemcial Industry and Engineering, 2014,31(4): 64-68
2014, Vol. 31 
